电纺制备ZrO<sub>2</sub>多孔纤维及其导热性能

doi:10.11896/cldb.18050192

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Abstract In this paper, ZrOCl₂·8H₂O and Y₂O₃·6H₂O were used as raw material and stabilizer, respectively. Polyvinylpyrrolidone (PVP) and ethanol were used as spinning aid and solvent, respectively. The ZrO₂ porous fiber was obtained after the electrospinning precursor fibers were calcined at high temperature. The phase and morphology of fibers were characterized by XRD, FTIR, SRS and SEM, and the thermal conductivity of the fibers was also measured. The results showed that the precursor fiber transformed into t-ZrO₂ fiber at 800 ℃, and the diameter was about 180 nm. Besides that, some pore structure appeared in the fibers, and their BET specific surface area was 15.36 m²/g, and the average pore diameter was 8 nm. The ZrO₂ crystal in the fiber further developed and the fiber diameter became 270 nm when the calcination temperature increased to 1 000 ℃. In addition, some pore structure still existed in the fiber with the specific surface area of 13.22 m²/g and average pore diameter of 9 nm. However, when the calcination temperature is 1 200 ℃, the pores disappeared and the grain sintered in fibers. As a result, the thermal conductivity of the fiber calcined at 800 ℃, 1 000 ℃, 1 200 ℃ increased, and the values were 0.092 9 W/(m·K), 0.095 1 W/(m·K) and 0.106 8 W/(m·K), respectively.

Key words： electrospinning ZrO₂ porous fiber thermal conductivity

Published: 30 August 2019

CLC number:

TQ340.64

About author:: Jian Kanggraduated from North China University of Science and Technology in April 2018 with a master’s degree in engineering. It is mainly engaged in the research of high-temperature structural materials, supercapacitors and porous materials.Hengyong Weigraduated from Tongji University in September 2010 with a doctorate in material science. Research direction: bionic materials, high temperature insulation materials, supercapacitors, surface isolators and absorbing materials.

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	KANG Jian
	CUI Shuai
	WEI Hengyong
	BU Jinglong
	CUI Yi
	LI Hui
	YANG Liu
	LUO Jing
	JI Wenling

Cite this article:

KANG Jian,CUI Shuai,WEI Hengyong, et al. Preparation of ZrO₂ Porous Fiber by Electrospinning and Its Thermal Conductivity[J]. Materials Reports, 2019, 33(20): 3396-3400.

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http://www.mater-rep.com/EN/10.11896/cldb.18050192 OR http://www.mater-rep.com/EN/Y2019/V33/I20/3396

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